Sounds like you did absolutely the right thing, jez. Everyone knew where each other was and managed to fly safe, which - after all - is the object of the exercise.
In this situation, after receiving no reply I usually give a position report to "<Name of closed station> traffic". Then at least anyone listening in knows where I am and what I'm doing.
At Cumbernauld, when A/G goes off the air, they advise everyone to make "standard calls" and we all sort each other out in the circuit. Works a charm.